[DeTomaso] Fuel Pump Question

[Dagny Kristine Bakken]

Yes,i can see from searching that there are several systems in the 300$
range,and some have a alarm function to warn the driver if something
wrong,so the eyes can be on the road and not on the monitor :)
 
Øyvind

  _____  

Fra: Ken Green [mailto:kenn_green at yahoo.com] 
Sendt: 14. juli 2007 18:17
Til: Dagny Kristine Bakken; 'Doug1'; 'Thomas Tornblom'; MikeLDrew at aol.com
Kopi: artstephens at charter.net; detomaso at realbig.com
Emne: Re: [DeTomaso] Fuel Pump Question


I think there are a lot of O2 gauge/sensor kits available from Autometer and
others like this:
 
http://cgi.ebay.com/ebaymotors/Innovate-G2-Gauge-w-LC-1-KIT-Silver-Air-Fuel-
O2-3801_W0QQitemZ190131243772
 
Ken

Dagny Kristine Bakken <dagny-kr at online.no> wrote:

I agree,and that will in the same time give a indication of propper jetting
of the carb.Is there any available sensorsystems to install permanently into
our cars to get track of it when driving?

Øyvind

-----Opprinnelig melding-----
Fra: Doug1 [mailto:doug1 at gtcinternet.com] 
Sendt: 14. juli 2007 17:03
Til: Dagny Kristine Bakken; 'Thomas Tornblom'; MikeLDrew at aol.com
Kopi: artstephens at charter.net; detomaso at realbig.com
Emne: RE: [DeTomaso] Fuel Pump Question

Actually the safest way is to use a wideband O2 sensor in the exhaust. Most
dyno shops can easily perform this service for you.

Doug Braun
blue 73L #5505

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Dagny Kristine Bakken
Sent: Saturday, July 14, 2007 5:35 AM
To: 'Thomas Tornblom'; MikeLDrew at aol.com
Cc: artstephens at charter.net; detomaso at realbig.com; doug at silicondesigns.com
Subject: Re: [DeTomaso] Fuel Pump Question


So the conclusion is,that you can have full pressure reading and a pump
thats doing its job,and still have the risk of empty the floatbowl due to a
restriction in the fuelinlet to the bowl.If you could watch the bowllevel
all the time,that will bee the safest indication.

Øyvind Bakken

-----Opprinnelig melding-----
Fra: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] På
vegne av Thomas Tornblom
Sendt: 14. juli 2007 10:50
Til: MikeLDrew at aol.com
Kopi: artstephens at charter.net; detomaso at realbig.com; doug at silicondesigns.com
Emne: Re: [DeTomaso] Fuel Pump Question

MikeLDrew at aol.com skrev:
> In a message dated 7/13/07 6:53:03 PM, artstephens at charter.net writes:
>
>
>> If I am
>> using fuel faster than the system is providing it, could my gauge 
>> still be showing full pressure until the bowl actually empties?
>>
>
> Absolutely. Pressure and volume normally have an inverse relationship.
A
> pump pushing against a restrictive pipe will generate a higher 
> pressure, but a lower volume, than the same pump trying to move fluid 
> through a larger-diameter pipe, which would have less resistance, and 
> thus
lower pressure, but higher
> volume. You could put a cork in your fuel line, and have high pressure
and
> zero volume.

If the gauge is tee'd in at the carb, then as long as your gauge is showing
adequate pressure, the pump is keeping up with demand.

It can only show full pressure and not providing adequate flow if there is a
restriction downstream of the gauge connection.

Thomas


>
> And your carburetor runs out of volume, not pressure.
>
> The ambition is to have a pump that is capable of generating adequate
> pressure while delivering the appropriate volume. Excessively high
pressure
> overpowers the internals in the carburetor, which is why the goal is
normally 6 psi
> or so for Holley-type carbs, and lower (3-4 psi? I think?) for Webers.
>
> Mike


--
Real life: Thomas Törnblom Email: Thomas.Tornblom at Hax.SE
Snail mail: Banvallsvägen 14 Phone: +46 18 444 33 21
S - 754 40 Uppsala, Sweden Cellular: +46 70 261 1372
Fax: +46 18 44 44 324





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